Wrench.



PATBNTBD APR. 26, 1904. 0. G.v MGLIN.

WRENCH. Y APPLIOATIN FILED JUNE 24,1903.

NO MODEL.

E S S MW r* `W UNITED STATES Patented April 2e, 19021.

1 PATENT OFFICE.

i oHARLEs e. MoLTN, or WARREN, PENNSYLVANIA.

WRENCH. X

SPECIFICATION forming part of Letters Patent N0. 758,266, dated April 2.6, 19.0.4'. i i Application iiled June 24, 1903. Serial No. 162,918. (No model.) Y

l To all whom, it may concern:

Be it known that I, CHARLES G.,MLIN, a citizen of the United States, residing at Warren,

in the county of Warren and State of Pennsylvania, have invented-new and useful Improveniente in Wrenches, ofwhich the fol lowing is a specification.

My invention relates to certain new and useful improvements in that type of tools known as sliding-jaw wrenches and wherein one jaw moves relative tothe other to clamp and 1 tric and provided with a toothed head or end adapted by theadjustment of the eccentric to be movedinto and out of engagement with the rack-surface of the movable jaw.

My invention also consists in the employ- Y ment of means connected with the head of the and the constructions and combinations of' wrench for effecting a quick closing or opening of the jaws independent of Y,the manipulation of the handle or its eccentric.

My invention further consists of the parts parts, which I will hereinafter describe and Y claim.

In the accompanying drawings, forming part of this speciication, and in which similar letters of reference indicate like parts throughout the `several views, Figure I rep-I resents a side elevation ofl a Wrench embodying my invention. Fig. 2 is an edge'view of the same. Fig. 3 isa sectional view of the head, showing the fixed and movable jaws and Y the toothed head of the handle in engagement with the rack-bar of the movable jaw. `Fig.

4 is a view similar to Figf and showing the toothed head of the handle moved away from and outv of connection with the rack-bar of the movable' jaw. Figs. 5, 6, and 7 are detached Vviews of the eccentric crank-pin and locking-r bolt.

In carrying out my invention I form a head A, which is made rigid with and a part of the stationary jaw Z1. This head may be made by different methods and of any well-known form, and it is herein shown as having an opening VZi" extending through it in a plane' at right `angles to the projection lof the stationary jaw. The head is also. slotted from below to admit the upper or -head end of the operating-handle. i

The movable jaw c2 seatsupon the top edge of the head A and opposes the fixed jaw and is provided with a rack-bar c, which extends at right angles to the jaw and is slidably guided in the opening 5X of the head, it being appropriately guided by the side walls of-said opening and by suitable screws d or pins passing through the side of the head A andengaging a slot or channel c3 in the'side of the rack-bar.

In connection with'the sliding jaw and as a means for loperating the same I employ ahandle a, the upper end of which enters the lower slotted portion o f the head A and is provided with a head in the form of a toothed segment, as it is provided with' teeth a', which are designed toA operatively engagew with the teeth of the rack-bar of the movable'jaw. The toothed head orupper end of the handle is mounted upon an eccentric-pin e, on the opposite ends of `which'are fixed the eccentrics in the form of Ydisks e e', appropriatelyrotatively mounted in circular openings in the sides of the head of-the lixed jaw, kas shown in Fig. l. In the practical construction of the eccentric-pin I prefer to make ofne disk removable to enable thepin proper to be placed into the opening in the head of the handle. The pin and the eccentric-disks being to all intents and purposes av single rigid structure,

`I shall hereinafter referto them simply as an .eccentricpin. To the eccentric-pin-say I to one ofthe diskv ends thereof-I hingedly attacha locking bolt or clamp j', which lfurnishes a handle or finger-piece by which Athe .eccentric-pin may be turned in its bearings to raise and lower the toothed endrof the handle relativeto-the rack-bar of the movable jaw, said locking-bolt adaptedialso to be turned down alongside the head of the fixed jawiand ted upon a guide-pin g and having its upper IOO end pivotally connected with a link z, which in turn is pivotally connected with a second link e', whoseupper end is forked and pivotally connected with the head A, said links 71, and c' forming, essentially, a toggle-lever connection between the slide-bar and the head A.

From this description it will be apparent that the parts being in the normal position (shown in Fig. 4) when the eccentric-pin is turned-say by means of the locking-bolt f#- the handle is drawn farther into the head A and until the teeth ai are brought operatively into engagement with the teeth of the rackbar of the movable jaw, as in Fig. 3. If the handle is now moved to the left, the sliding jaw is caused to approach the fixed jaw, and the nut or piece of work'which has been received between the jaws is firmly gripped, and

when the eccentric-pin is again turned into the lower position, as shown in Fig. 4, the handle is moved 'to caus'ethe toothed end thereof to recedel relative to the rack-bar of the movable jaw, and thus disen'gagev itself therefrom. When-the wrench is in the straight position, V(shown in' full lines in-Fig. 1,) the jaws stand apart or areopen to receive the nut or work, and

' ofI its rack-bar and then turning the'eccentricpi'n into'its higher position to effect the engagement of the handle with the rack-bar and operating the handle, as before explained. This la'st-named'a'djustment increases or decreases'the normal size of the opening between the jaws when the parts are in the normal straight position ofFig. l. "If it is desired to quickly close the jaws upon the nut or other piece of work, the slidebar gis pulled down and the toggle-lever connection /L z' drawsk the head A over. turning upon the disk ends of the eccentric-pin, into the dotted position of Fig. l, the handle and rack-barbeing in engagement when the sliding Ajaw is rapidly moved relative to the liXed jaw, and'when it isA desired to quickly open the jaws the aforesaid operation of the slidebar land its adjuncts in an opposite direction effects' the desired movement.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, isc i 1. In a wrench, the combination ofv a head having a stationary jaw extension, said head slotted on its under side and provided with a transverse opening; a movable jaw slidably ,mounted on the pin between said disk ends and adapted, by the rotation of said pin to engage and disengage said rack-bar.

2. In a wrench, the combination of a head having a fixed jaw extension, said head open on its under side and provided with a trans-4 verse opening; a movable jaw slidably mounted on the head and having a rack-bar guided in thetransverse opening thereof; said rackbar having a groove or channel in its side and said head having a pin to engage said groove or channel; a handle having a toothed upper end entering the lower end of the head; an eccentric-pin passing through the toothed end of the handle having disk ends rotatively mounted in said head;and a locking-bolt hinged to one of thedisk ends and adapted to engage an opening in the head to lock the pin, said bolt being adapted to be turned outwardly from the head to serve as a handle for rotating the pin to cause the toothed end of the handle to be moved into and out of engagement with the rack-bar.

3.' In'a wrenchythe combination of a head and provided with a rack-bar; a handle provided with a segmental toothed end; an eccentrically-mounted, rotatable pin upon which the handle is carried and by means of which the toothed portion thereof is moved into and out of engagement with `the rack-bar; vand a member hinged to the pin and adapted to swing outwardly from thehead to form a handle for rotating the pin, said member adapted to be forced into locked engagement with the head to maintain the position of the pin and said head having an vopening to receive said member. y

4. In a wrench', the combination of the head; the Xed and movable jaws; said movable jaw having a`rackbar extension; the handle having a toothed head; the eccentrically-mounted rotatable pin and means including aslide-bar nesses;

CHARLES G. MOLIN. Witnesses:

G. C. SWANsoN, D. A. SwANsoN.

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